4179 Toutatis (1989 AC) |
Classification: Apollo [NEO, PHA] SPK-ID: 2004179 |
[ hide orbit diagram ]
For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 562 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .6242486423007449 | 1.4578e-09 | |
a | 2.545398024640887 | 4.4651e-10 | au |
q | .9564367636438151 | 3.8517e-09 | au |
i | .4479490688610759 | 1.9011e-07 | deg |
node | 125.1994092263053 | 2.4049e-05 | deg |
peri | 277.9899152136348 | 2.3555e-05 | deg |
M | 311.2833559471783 | 2.2433e-07 | deg |
tp | 2459201.227485192620 (2020-Dec-17.72748519) | 9.7678e-07 | TDB |
period | 1483.310192528704 4.06 | 3.903e-07 1.069e-09 | d yr |
n | .2427004154716166 | 6.3862e-11 | deg/d |
Q | 4.134359285637959 | 7.2525e-10 | au |
|
Additional Model Parameters
Parameter | Value | Uncertainty (1-sigma) |
A1 [EST] | -4.112978930639502E-13 | 9.313E-14 |
A2 [EST] | -6.487923444540726E-15 | 1.041E-15 |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
15.2 |
|
n/a |
MPO473823 |
|
magnitude slope |
G |
0.10 |
|
n/a |
PDS3 (MPC 28111) |
Fit |
diameter |
diameter |
5.4 |
km |
n/a |
Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 |
based on assumed medium albedo (0.15) |
extent |
extent |
1.70x2.03x4.26 |
km |
0.08 |
Hudson et al. (2003) Icarus 161:346-355 |
dynamically equivalent, equal volume ellipsoid |
rotation period |
rot_per |
176. |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Nakamura, T.; Fuse, T. (1998) Pub. Astron. Soc. Japan 50, 531-536.] [Pravec, P.; et al. (2005) Icarus 173, 108-131.] |
geometric albedo |
albedo |
0.405 |
|
0.137 |
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2017AJ....154..168M) |
|
SMASSII spectral type |
spec_B |
Sk |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
|
4179 Toutatis (1989 AC) Discovered 1989-Jan-04 by Pollas, C. at Caussols |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
|